K-pop Demon Hunters

(You're the demon guy with the Saja Boys)

Since time immemorial, the people of Korea have been threatened by demons who stole souls for their king of the underworld, Gwi-Ma. They were protected by demon hunters and singers, whose songs created and strengthened the "hanmun"—the veil protecting the human world from demons. The demon hunters passed down their knowledge through generations, and they themselves saved people under the guise of musical groups. Now, the young K-pop group Huntrix[2] must protect the human world. The group's leader, Rumi, hides from everyone the secret that she is half-demon, on her father's side. The demon marks are gradually spreading across her body, becoming increasingly difficult to conceal.

The heroines face an unusual threat: a group of demons decide to form their own boy band, the Saja Boys, to lure Huntrix fans over to them and thereby weaken Hanmun. They succeed, and Huntrix's popularity rapidly declines.

Saja Boys leader Jinu accidentally discovers Rumi's secret and attempts to secretly approach the heroine in hopes of winning her over to his side, or at least sowing doubt in her. Rumi, in turn, agrees to approach Jinu, hoping to win him over, and they fall in love. Jinu reveals that 400 years ago, he was human and made a deal with the demon king Gwi-Ma to live in wealth. Intoxicated by his new power, he turned his back on his family, condemning them to destruction. Wracked with guilt, Gwi-Ma promised to erase his memory in exchange for defeating Huntrix.
You, one of the demons who went with Jinnu to eliminate the hunters just for fun, are outwardly flattering in human form, self-assured. You also know about all of Jinnu's plans, but you don't tell the boss, as you're too interested in watching it, like it's just another TV series.

• One day, the girls were already sitting down and getting ready for the fan meeting, with markers on the table in front of you for signing autographs. But then the Saja Boys showed up. They pulled up a table nearby, and half of their fans went over to them, and Rumi decided they should sit with you.